If 5J of work are done on a spring, compressing it by 12cm, what is the spring constant?
Q: 1. A student of mass 40 kg caries a bag weighing 5000g from the ground floor to his class on the…
A: Work done by boy W= mgh Given that m= 5kg h= 0.7m
Q: Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3…
A: Given Data: Constant Force F=25 N Mass of object M=2 kg Duration of force t=3 sec
Q: A pump is required to lift 800 kg of water per minute from a well 16.0 m deep and eject it with a…
A: Given: Weight of water: m=800 [kg] Height: h=16 [m] Speed of ejecting out: v=15 [m/s]
Q: Problem 3: The force F = (6.55 N)i + (5.79 N)j acts on a particle as it moves along a straight line…
A:
Q: Ans. (i) 2000 J (ii) 1000 J 18. A truck weighing 1000 kgf changes its speed from 36 km h-¹ to 72 km…
A: Given data, Mass of the truck m = 1000 kg Initial velocity u=36 km/h=36×518=10 m/s Final velocity,…
Q: By what percent has the cubic term increased the work over what would be needed to compress an ideal…
A: Write the expression for the ideal spring work and substitute the corresponding values.
Q: Calculate the work done by a student in lifting a 0.3 kg book from the ground and keeping it on a…
A:
Q: A trough is 2 meters long, 2 meters wide, and 4 meters deep. The vertical cross-section of the…
A: Find the amount of work in joules required to empty the trough by pumping the water over the top.…
Q: The work done against gravity in taking 5000 grams mass at 39.37 inches height in 1 sec will be
A: Work done is required to pull up a mass of m kg in height 'h' is= mgh Here, g=gravitational constant…
Q: How much work is done by gravity when dead lifting a 100.0 kg barbell 92.78 cm from the floor to hip…
A: Dear student The work done is defined as force × displacement in the direction of force. W = F S…
Q: ) How much work must be done on a heavy object to lower it from a height where it has 4000 J of GPE…
A:
Q: 1kg mass attached to a spring is dropped from a height of 1m. The spring constant is 1700 N/m.…
A: Given: The mass of the object is 1 kg. The spring constant is 1700 N/m. The height of the object is…
Q: In physics, what conditions must be satisfied if work is to be done?
A:
Q: 1. Suppose a farmer binding a part of the rice terraces wants to bring two 100-kg sack of fertilizer…
A: Ans:- Image-1
Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 x 105 J of useful work…
A: A) W= 2×105 J E= 500kcal = 21× 105 J B) efficiency = 20%
Q: (a) What is the efficiency of an out-of-condition professor who does 2.00 ✕ 105 J of useful work…
A: The efficiency of is calculated as useful workmetabolizing enegy×100%
Q: A particle of mass 200g is thrown vertically upwards with a speed of 10ms-1, the work done by force…
A: Given: mass = 200 g v = 10 m/s
Q: How much work is it to lift a 25 kg sack of cement vertically 4.3 m?
A: Given data: Mass (m) = 25 kg Height (h) = 4.3 m Required: Work done (W)
Q: You attempt to lift a 1200 N barbell for 10 min, excreting a 1200 N force, but won't move. How much…
A: Required : Amount of work done.
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 105 J of useful work…
A: A) work = 2.1 × 105 J Food Energy = 500×1000 cal = 21× 105 J B)…
Q: An elevator of mass 700 kg descends with an acceleration of 3 m/s^2 over a distance of 12 metres.…
A: Given that :Mass of elevator, m=700 kgAcceleration downward, a=3 m/s2Distance, d=12 m
Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.320 m…
A: The given values are, d=0.320 mF=5.10 N
Q: weight lifter hold 900N over his head. Is he doing work on weight? EXPLAIN.
A: The work done by the weight lifter can be given as, W=F.d Here, F denotes the force on the object is…
Q: A 2kg wooden block is pushed against a spring (not attached) compressing it through 20cm from its…
A:
Q: When a spring is stretched , is the work done by the stretching force positive or negative?
A:
Q: A 3.2-kg bucket of water is lifted vertically 2 m How much work against gravity is done? Use g =…
A: Mass of bucket of water = 3.2 kg Vertical distance = 2 m g = 9.8 m/s2
Q: A bucket filled with sand has a total mass of 25 kg. Your friend begins steadily lifting the bucket…
A:
Q: (a) What is the efficiency of an out-of-condition professor who does 2.10 x 10° J of useful work…
A: a) We know that, efficiency= (output/input)x100 So here output is 2.10×10^5 joule and input is…
Q: Using data from Table, calculate the daily energy needs of a person who sleeps for 8.00 h, walks for…
A: The surface area of the person is found as,
Q: It takes 1200 J of work to stretch a spring from its natural length of 1m to a length of 5m. Find…
A:
Q: If a work of 0.4 joule is needed to stretch a spring a distance x=0.05m What is the force constant…
A: The work required to stretch a spring to a distance is given.
Q: The net work done on a certain object is zero. What can you sayabout its speed?
A: Net work done is zero
Q: Lee pushes horizontally with a force of 41 N on a 25 kg mass for 16 m across a floor. Calculate the…
A: The expression for the work done on an object is written as, Here, F and d represent the force and…
Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.460 m…
A: Step 1Let F be the force applied on the can of soup and d be the horizontal distance it travels
Q: poamany A tank in the shape of an inverted right circular cone has height 6 meters and radius 4…
A: The work(W) required to empty the tank by pumping the hot chocolate over the top of the tank. given,…
Q: a) What is the efficiency of an out-of-condition professor who does 1.90 ✕ 105 J of useful work…
A: Useful work done : W = 1.90 ✕ 105 J Heat provided by food: Q = 510 kcal = 2.134 x 106 J…
Q: What is the efficiency of an out-of- condition professor who does 2.10 x 10^5 J of useful work while…
A:
Q: How much work does a supermarket checkout attendant do on a can of soup he pushes 0.320 m…
A: Given data: Displacement (d) = 0.320 m Force (F) = 5.20 N Required: Work done (W)
Step by step
Solved in 2 steps
