Find the maximum speed of a car which can be safely driven along a curve of radius 100 m and the co-efficient of friction between the tyres and road is 0.2.
Q: (a) How much gravitational potential energy (relative to the ground on which it is built) is stored…
A: Gravitational potential energy.
Q: A 9.6 kg ball is rolling at a speed of 3.8 m/s when it encounters a ramp. How high can it roll up…
A:
Q: A box of mass 7.5 kg has an initial velocity of vi down an inclined planed that is at an angle of…
A: Given Data: The mass of a box is, m=7.5 kg The angle of inclination is, θ=17° The coefficient of…
Q: (a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is…
A: Given mass(m)=7*109 kg height(h)=40 m
Q: (II) At an accident scene on a level road, investigators measure a car's skid mark to be 98 m long.…
A: Given data: Distance traveled (s) = 98 m Coefficient of friction (μ) = 0.38
Q: potential energy due to height is: P E h = m * g * h and kinetic energy is: K E = 1 2 m v…
A: Idea of doing this problem is first picturing the roller coaster. Applying conservation of energy…
Q: (a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is…
A: Gravitational potential energy = mgh U = 8×109 × 9.8 × 41 U = 3.21 × 1012 J
Q: (a) Calculate the force needed to bring a 1100 kg car to rest from a speed of 90.0 km/h in a…
A: mass of car = 1100 kg initial speed = 90km/hr = 90 * 5/18 = 25 m/sfinal speed = 0 m/sdistance =…
Q: . (III) A cyclist intends to cycle up a 7.50° hill whose verticalheight is 125 m. The pedals turn in…
A: Given that the mass of the bicycle and person combine is 75 kg. The vertical height of the hill is…
Q: A box of mass 7.5 kg has an initial velocity of vi down an inclined planed that is at an angle of…
A:
Q: A block slides down a frictionless inclined ramp and experiences no significant air resistance. If…
A: Please see the answer below
Q: Find the work done by a person weighing 160 lb walking exactly one revolution(s) up a circular,…
A: A person of weight F=160 lb is walking up a spiral staircase of radius r=4 ft and he rises up to a…
Q: (b) Suppose instead the car hits a concrete abutment at full speed and is brought to a stop in 2.00…
A: (a) Given that Mass of car(m) =800kg Speed( v) =85 km/h=85*5/18 m/sec Distance( d) =125m
Q: (Figure 1) A roller-coaster car may be represented by a block of mass 50.0 kg. The car is released…
A: GIVEN Mass of block (m) =50kg height from block release=54 m radius (R) =…
Q: (a) Calculate the force (in N) needed to bring a 950 kg car to rest from speed of 90.0 km/h in a…
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Q: For the cases shown in Fig. , the object is released from restat the top and feels no friction or…
A: During free fall the acceleration acting on the mass will be acceleration due to gravity g=9.8…
Q: cookie jar is moving up a 42 ° incline. At a point 59 cm from the bottom of the incline (measured…
A:
Q: (a) How much gravitational potential energy (relative to the ground on which it is built) is stored…
A: a) The expression for find gravitational potential energy is PE=mgh Substitute values in the above…
Q: A 50-kg skier with an initial speed of 13 m/s coasts up a 2.5-m-high rise as shown in the figure.…
A:
Q: (a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is…
A:
Q: (a) How much gravitational potential energy (relative to the ground on which it is built) is stored…
A:
Q: A cookie jar is moving up a 43 ° incline. At a point 50 cm from the bottom of the incline (measured…
A: Draw the free-body diagram of the cookie jar.
Q: (c) A large roller in the form of a uniform cylinder is pulled by a tractor to compact earth; it has…
A: Given, Diameter of the cylindrical roller = 180 cm mass = 10 kN Speed = 14.4 kph distance = 3 m
Q: The distance D (in feet) required for a moving vehicle to come to a complete stop on dry pavement is…
A: We use the kinematic relations to get the required relations and analyse the given case of how the…
Q: A 0.40 kg small box starts from rest and slides down a frictionless curved surface ( ¼ of a circle )…
A: Ans 2 given U = αx3
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- An 18-kg sled starts up a 28° incline with a speed of 2.3 m/sThe coefficient of kinetic friction is μk=0.025(a) How far up the incline does the sled travel? (b) Whatcondition must you put on the coefficient of static frictionif the sled is not to get stuck at the point determined inpart (a)? (c) If the sled slides back down, what is its speedwhen it returns to its starting point?(a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 8 x 10° kg and its center of mass is 36.0 m above the surrounding ground? (b) What is the ratio of this energy to the daily food intake of a person (1.2 x 10' J)?Calculate the power required of a car of mass, m = 1,400 kg. When climbs a hill with θ = 10° at constant velocity v = 22 m/s.
- 6) In a downhill ski race, surprisingly, little advantage is gained by getting a running start. (This is because the initial kinetic energy is small compared with the gain in gravitational potential energy even on small hills.) To demonstrate this, find the final speed in m/s and the time taken in seconds for a skier who skies 64.0 m along a 29° slope neglecting friction for the following two cases. (Enter the final speeds to at least one decimal place.) (a) starting from rest final speed _____m/s time taken _____s (b) starting with an initial speed of 3.00 m/s final speed _____m/s time taken _____s (c) Does the answer surprise you? Discuss in detail why it is still advantageous to get a running start in very competitive events.The engine of a car is working at a steady rate of 5 kW. The car of mass 1200kgis being driven along a level road against a constant resistance to motion of 325 N.Find the acceleration of the car when its speed is 8 m/s, and the maximum speedof the car.A cookie jar is moving up a 42 ° incline. At a point 56 cm from the bottom of the incline (measured along the incline), the jar has a speed of 1.2 m/s. The coefficient of kinetic friction between jar and incline is 0.17. (a) How much farther up the incline will the jar move? (b) How fast will it be going when it has slid back to the bottom of the incline? (c) Do the answers to (a) and (b) increase, decrease, or remain the same if we decrease the coefficient of kinetic friction (but do not change the given speed or location)? (a) Number i (b) Number (c) Units Units
- r=3 C K Determine the maxim initial velocity VA be that Can given to the block with 2 kg 4m m=2 ky 5 m Moss so that it passes through B Without lifting of. (Ignore the friction)must solve all parts for upvote5) (a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 7 ✕ 109 kg and its center of mass is 32.0 m above the surrounding ground? _____J (b) What is the ratio of this energy to the daily food intake of a person (1.2 ✕ 107 J)? _____ :1
- (a) How high (in m) a hill can a car coast up (engine disengaged) if friction is negligible and its initial speed is 90.0 km/h? ____________ m (b) If, in actuality, a 750 kg car with an initial speed of 90.0 km/h is observed to coast up a hill to a height 17.0 m above its starting point, how much thermal energy (in J) was generated by friction? (Enter a number.) ____________ J (c) What is the average force of friction (down the slope) if the hill has a slope 2.5° above the horizontal? (Enter your answer in N. Enter a number.) ____________ N(a) How much gravitational potential energy (in J) (relative to the ground on which it is built) is stored in an Egyptian pyramid, given its mass is about 5 x 109 kg and its center of mass is 23.0 m above the surrounding ground? (Enter a number.) (b) What is the ratio of this energy to the daily food intake of a person (1.2 x 10' J)? (Enter your answer as a ratio to the number 1. Enter a number.) :1Disregarding friction, a roller coaster with a vertical drop of 46 m will achieve a speed of about 30 m/s. If the height of the drop is doubled, how much the speed is going to be?