(III) Early test flights for the space shuttle used a “glider”(mass of 980 kg including pilot). After a horizontal launchat 480 km/h at a height of 3500 m, the glider eventuallylanded at a speed of 210 km/h (a) What would its landingspeed have been in the absence of air resistance? (b) Whatwas the average force of air resistance exerted on it if itcame in at a constant glide angle of 12° to the Earth’s surface?

Q: Bob traverses a chasm by stringing a rope between a tree on one side of the chasm and a tree on the…

A:

Q: (II) A box is given a push so that it slides across the floor.How far will it go, given that the…

A: the coefficient of kinetic friction = 0.15  Initial speed of the box = 3.5 m/s To determine :- How…

Q: 53. A carton is given an initial speed of 3.0 m/s up the 22.0° plane shown in Fig. 4-55. (a) How far…

A: Given: In this question, the given details are, The initial velocity of the carton is u=3.0 m/s up…

Q: (II) A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed…

A: We are authorized to answer three subparts at a time, since you have not mentioned which part you…

Q: The engine of a small trailer special, mass 10 tons, exerts a force parallel to its displacement and…

A:

Q: (II) What average force is needed to accelerate a 9.20-gram pellet from rest to 125 m/s over a…

A: Given data:Note: 1000 gm =1 kg.mass of pellet (m) = 9.20 gm = 9.20×10-3 kg.Initial velocity (u) = 0…

Q: While neglecting air resistance, why do objects thrown upwards (in an open area) fall after reaching…

A: Since gravitational acceleration on object is always downward. So when objects thrown upwards speed…

Q: (3) An object of mass 10 kg is dropped from a flying plane. The force of air resistance is 0.07v,…

A: Given that, Mass of an object, m = 10 kg The force of air resistance = 0.07v, where v is the…

Q: When you parachute, you hit the ground with the same speed as free falling from a height of 4.5m,…

A: From equation of motion we know that v2= u2+ 2as . During freefall condition using initial velocity…

Q: A frictionless incline is 5.00 m long (the distance from the top of the incline to the bottom,…

A:

Q: Bricks 250 N at rest on the plane (as in fig.) when the force F(-150 N) is applied at t 0. Determine…

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Q: What is the coefficient of kinetic friction?

A:

Q: A child on a sled comes flying over the crest of a small hill, as shown in Fig. 5–32. His sled does…

A: When the child is on a level surface, the normal force between its chest and sled is equal to the…

Q: (b) The greater is the mass of an object the more force is needed to make it move'. State the…

A:

Q: How much time does it take for a rock dropped from a cliff to fall 180 meters? Assume no air drag.

A: Initial velocity (u) = 0 m/s height of cliff (h) = 180 m

Q: (II) What will a spring scale read for the weight of a 58.0-kgwoman in an elevator that moves (a)…

A:

Q: Find the maximum height achieved by an object of mass (3 kg) thrown vertically upward with an…

A: Given, u=13 m/sSince it is travelling upwards, a =-9.81 m/s^2At max height h, v= 0 m/s

Q: (II) A 14.0-kg bucket is lowered vertically by a rope in which there is 163 N of tension at a given…

A:

Q: An elevator and its load weigh 1600lb, find the acceleration when the elevator moving downward at 20…

A: Given An elevator moving downward at 20 ft/s is brought to rest in a distance of 50ft. Find the the…

Q: Find an equation to determine the magnitude of the net force required to stop a car of mass m, given…

A: Answer       Given mass of car=m       Initial speed (u) =vo       stopping distances=x…

Q: (17). A rock is dropped from rest. If it has mass = 0.074 kg, terminal velocity of 26 m/s, and a…

A:

Q: (II) A car can decelerate at -3.80 m/s2 without skidding when coming to rest on a level road. What…

A: tIt is given that,

Q: An object of mass 300g, shown in the figure like = 30 ° non-friction oblique with an angle of…

A:

Q: An airplane weighs 180 kN and has wing area of 160 m². (a) If it cruises at 112 m/s at 3000 m…

A: Given : W=180×103N, A=160m2, v=112m/s, h=3000m, CD=0.02 (a) The density of air at h=3000m is :…

Q: An aircraft is flying straight and level over horizontal ground at a height of 500 m and speed of…

A:

Q: The block shown in Fig. 4-59 has mass m=7.0 kg and lies on a fixed smooth frictionless plane tilted…

A: Given:Mass of the block, m = 7 kgAngle of inclination = 22°Distance to be travelled by the block =…

Q: (II) A particular race car can cover a quarter-mile track (402m) in 6.40s starting from a…

A: We have to determine the acceleration experienced by the driver, and the horizontal force exerted by…

Q: Compute the force on the body of the insect that must be generated during the downward wing stroke…

A: To determine: The force on the body of the insect.

Q: 12kg L. The 12-kg block A in Fig. (a) is released from rest at the top of the 2-kg wedge B (position…

A: The mass of the block is given as, mA=12 kg, The mass of the wedge is given as, mB=2 kg, The angle…

Q: A 15 KN car weight is travelling at a speed of 32 m/s when driver slams on the breaks and skids to a…

A: Given data: The weight of the car is W=15 kN. The speed of the car is u=32 m/s. The angle is θ=15°.…

Q: The average skydiver, with parachute unopened, weighs 80 kg. Depending on the orientation of the…

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Q: Discuss whether an object can be moving if the net force is acting on the object is zero.

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Q: (d) A bullet is fired horizontally from a high-powered rifle. If air drag is taken into account, is…

A:

Q: (II) A 12.0-kg monkey hangs from a cord suspended fromthe ceiling of an elevator. The cord can…

A:

Q: (III) A pilot performs an evasive maneuver by diving vertically at 270 m/s .If he can withstand an…

A: Using kinematics, 2as=vf2-vi2s=vf2-vi22a

Q: . (II) A skier moves down a 12° slope at constant speed. Whatcan you say about the coefficient of…

A:

Q: (I) If the coefficient of kinetic friction between a 22-kg crate and the floor is 0.30, what…

A:

Q: A 72-kg water skier is being accelerated by a ski boat on a flat (“glassy") lake. The coefficient of…

A:

Spring Potential Energy

The potential energy is the energy possessed by a body by virtue of its position or the energy held by the object due to its position relative to other objects, its force like stresses, charge, and other factors affecting the particles of the body. The potential energy is the measure of the net work done by or on the body. The spring potential energy is the potential energy stored due to the deformation of an elastic spring and this elasticity is due to the stretched spring. The elasticity is the ability of a solid-state matter to come back to its equilibrium position or original position after any kind of external force is acted on it. It is also known as Elastic potential energy. The potential energy here is caused due to the displacement of the spring from its equilibrium position to another position and this potential energy is equal to the net work done due to the stretching of the spring. It also resembles the same mechanics of the oscillation of a simple pendulum, where due to the external force, the object moves from its equilibrium position to its maximum ends and the periodic motion continues till it comes back to the equilibrium position to rest.