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Problem_Sheet_7

# Problem_Sheet_7 - GE 208K Chapter 7 Problem Sheet 7 1 A...

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GE 208K: Chapter 7 Problem Sheet: 7 1. A block of mass 2.50 kg is pushed 2.0m along a frictionless horizontal table by a constant 16.0 N force directed 25 ° below the horizontal. Determine the work done on the block by a. The applied force b. The normal force exerted by the table c. The gravitational force d. Determine the total work done on the block 2. A shopper pushed a cart with a force of 35.0 N directed at an angle of 25.0 ° downward from the horizontal Find the work done by the shopper on the cart as he moves down an aisle 50.0m long 3. A raindrop of mass 3.35*10-5 kg falls vertically at a constant speed under the influence of gravity and air resistance. As it falls 100m, find the work done on the raindrop a. By the gravitational force b. By the air resistance 4. A force F = (6i-2j) N acts on a particle that undergoes a displacement r = (3i + j) m. Find a. The work done by the force on the particle b. The angle between the force and the displacement 5. For A=3i+j-k, B=-i+2j+5k, C=2j-3k, find C. (A-B) 6. The force acting on a particle varies as shown in the figure below. Find the work

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