
![(4)The work done is, W = (65 kg (9.8 m/s (4.50 m = 2867J (5) The work done is, W = (60 kg)(9.8 m/s?)(840 m) = 4.94x10% ] The](http://img.homeworklib.com/questions/1ed6ee20-75c1-11ea-9f5d-d5e6ce726848.png?x-oss-process=image/resize,w_560)
a) how much work is done in raising a 50.0 kg crate a distance of 1.5 m above a storeroom floor?b) what is the change of potential energy as a result of this move?c) how much kinetic energy will the crate have as it falls and hits the floor?please show work
a) how much work is done in raising a 50.0 kg crate a distance of 1.5 m above a storeroom floor? b) what is the change of potential energy as a result of this move? c) how much kinetic energy will the crate have as it falls and hits the floor? please show work
010 (part 1 of 2) 10.0 points A crate is lifted vertically 1.5 m and then held at rest. The crate has weight 100 N (i.e., it is supported by an upward force of 100 N). How much work was done in lifting the crate from the ground to its final position? 1. No work was done. 2. None of these 3. More than 150 J 4. A bit less than 150 J 5. 150 J 011 (part 2 of...
A tension force of 135 N inclined at 15.0° above the horizontal is used to pull a 29.0 kg storage crate a distance of 3.60 m on a rough surface. If the crate moves at a constant speed, find (a) the work done by the tension force and (b) the coefficient of kinetic friction between the crate and surface HINT (a) the work done by the tension force (in J) X J Enter a number. (b) the coefficient of kinetic...
A factory worker pushes a crate of mass 32.0 kg a distance of 4.20 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.25. What magnitude of force must the worker apply? Express your answer using two significant figures. F = N Part B How much work is done on the crate by this force? Express your answer using two significant figures. W = J ...
A horizontal force of 153 N is used to push a 46.0 kg packing crate a distance of 7.00 m on a rough horizontal surface. The acceleration of gravity is 9.81 m/s2 . If the crate moves with constant velocity, calculate a) the work done by the force. Answer in units of J. b) the coefficient of kinetic friction.
5. An electric lift can raise a 250.0 kg load a distance of 10.0 m in 2.5 s. What is the power of the lift? (10 points) 6.what is the velocity of a 8.00 kg bowling ball if its kinetic energy is 87.5J?(15points) 7.A 800 N box is pushed across a level floor for a distance of S.0 m with a force of 450 N. How much work was done on the box? (15points) 8. A horizontal force of 19.6...
2 points) 7 A worker pushes done? horizcetally on a large crate with a force of 300 N, and the crate moved 5.0 m. How much work was LASO kg bag ofsugar is on a counter. How much work is done to put the bag on a shelfadístance of OAS m above the counter? 9.Aman pushes a lawn mower on a level lawn with a force 200 N. ir40% ofthe force is directed downward, how much work is done by...
attraction if the distance between these two masses is halved? Energy and Oscillations 4 A force of 8O N used to push a table across a room does 800 J of wok. How far the chair move in this process? S. A net force of 60 N accelerates a 5.0 kg mass over a distance of 10 m. What is the work done by this net force? a. b. What is the increase in kinetic energy of the mass? 6-...
A car of mass 850 kg is initially moving at 110 km/h at the bottom of a large hill. Friction coefficient of 0.9 (rubber on dry asphalt) a) How high up the hill can the car coast (engine disengaged), if work done by friction is negligible? b) If, in actuality, the car is observed to coast up to a height of 22.o m above its starting point, how much thermal energy was generated by friction?