A block slides up a meter-high rough incline, before sliding back down. The work done by friction A is greater when going down none of the above is greater when going up increases the block's mechanical energy

Q: During a drag race Car A does work in moving 500 m in 4 seconds whereas Car B does the same work in…

A: Given two cars A and B does same work. Time of car A  tA = 4 sec Time of car B tB = 5 sec We have to…

Q: ohn, of mass 82.4 kg can do work for about 2.0 minutes at the rate of 1.0 hp. How long will it take…

A: Given data: Mass (m) = 82.4 kg Power (P) = 1.0 hp Height (h) = 12.0 m 1 hp = 746 watts Required:…

Q: What is the work done by the force F? F S1 S2 O Fs None of the above Zero O-Fs

A: Given data:   A force F, towards upward direction The object traveled a distance s Angle between…

Q: The total energy required to move a 10-N block up a 25-degree incline for 10 meters is 500 Joule. A…

A: We need to calculate the applied force, rate of work done by the force and the initial velocity of…

Q: If the total mass of the sled and the girl is 25 kg in the coefficient of kinetic friction between…

A:

Q: An coin is dropped vertically from the water surface in a swimming pool, water drag force is non…

A: This can be done using the concept of work done W=

Q: A package rests on the floor of an elevator that is rising with constant speed. The elevator exerts…

A: An elevator moving up with constant speed

Q: two masses, M and 3M, are connected by a lightweight string which passes over an ideal pulley. the…

A: We are given the 2 masses. One is on horizontal surface and other is hanging vertically. We draw…

Q: 50kg block is pushed a distance of 8m a long a level floor at a constant speed by a force applied at…

A:

Q: A 30.6 kg child starts from rest at the top and slides down a slide that is 1.68m high. At the…

A: Mass(m) =30 kg  Height(h) =1.68m  Speed at bottom (vf)=2.29 m/s  Speed at top (vi)=0 m/s  His…

Q: A man is pushing backwards on a rolling cart on an icy surface to stop it.  As they both slide to…

A: Work done is defined as the dot product of force vector and displacement vector. When the force…

Q: An man pushes on a heavy boulder sitting on the edge of a cliff on Mount Olympia, but it does not…

A:

Q: clown pulls a 100-n crate up a frictionless 30° slope 5m high , assuming that the crate moves at a…

A:

Q: A 20-N force is the only force on a 2-kg crate that starts from rest. At the instant the crate has…

A: We have givenHere, F, m, u, and d are the force, mass, initial velocity, and distance.

Q: A rope pulls a 5 kg mass is pulled straight upward at a speed of 10 m/s for a distance of 5 meters.…

A: Given, m=5 kg v=10 m/s d=5 m g=10 m/s2

Q: A book is moved on a rough wooden table from position A to position B. What is TRUE about the work…

A: Since, the work done by friction depends on the path taken and also the nature of work done by…

Q: A bouncy ball and a sandbag, both of the same mass are dropped from heights of 1.5m. The sandbag…

A: A bouncy bag and a sandbag both of the same mass are dropped from the same heights of 1.5 m , but…

Q: Which of the following choices describes the difference between work and power? Work is the product…

A: Required : Difference between the work and power.

Q: You push a box up an inclined plane at a constant speed As the box moves up the incline, Select one…

A: Required : The potential energy and the kinetic energy of the box.

Q: A 2 kg rock is thrown upward, with a speed of 5 m/s and returns to the same spot, with the same…

A: Give Mass m = 2 kg Initial velocity is U = 5 m/s in upward direction.  Final velocity is V = 5 m/s…

Q: A bowstring behaves like a spring with a spring constant of 420 N/m. It is initially pulled back 30…

A:

Q: It takes 3 s for 25 g car to go down a 100 incline for 1 m. ? How much work was done by friction?…

A: Given : Time, t = 3 s mass of car, m = 25 g  = 25*10-3 kg Inclination angle, θ = 100 Distance,x = 1…

Q: Identify a case where an object is moving over a surface with friction, but the frictional force…

A: When the object moves in a pure rolling motion, the work done by the friction will be zero.

Q: A 98 kg bicyclist traveling 15 m/s coasts up a 5 m high incline. After reaching the top of the…

A:

Q: A person picks a 1.00 kg box of macaroni from off the shelf and lowers it 0.77 m into a shopping…

A: GIVEN             Mass of box = 1kg            lowers distance = 0.77 m

Q: A moving object is acted by a frictional force. What is the work done by this frictional force?

A:

Q: A raindrop has a mass of 4.1x10 kg and falls down vertically at a constant speed. Only the…

A:

Q: A steel sphere weighing 5oN hangs at a height of 5.0m above the ground and the length of the chain…

A: Recall U=mgh For equilibrium∑Fx=0∑Fy=0

Q: Starting at rest, what will happen to the work done by the applied force of the engine if the cars…

A:

Q: A woman places a 2 kg block against a horizontal spring of force constant K = 300 N/m and compresses…

A:

Q: A person pushes a bookshelf across a level room. There is friction between the floor and the…

A: Given data:  A person pushes a bookshelf Required: The work done by friction force on the bookshelf

Q: A ball tied to a string is being whirled around in a circle. What can you say about the work done by…

A: A ball tied to a string is being whirled around in a circle.

Q: A cable “lowers” a 3000 kg elevator at a constant velocity for a distance of 35.0 m What is the work…

A:

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