Chapter 7- Homework. Now let's consider the total work done on an object that has several forces acting on it. A tractor is hitched to a sled loaded with firewood and pulls the sled a distance of 20.0 m along level frozen ground (Figure 1). The total weight of the sled and load is 14,700 N. The tractor exerts a constant force F⃗ T with

Part A Find the work done by the force \vec; A grocery cart with a mass of 19 kg is pushed at a constant speed along an aisle by a force F_P = 12 N which acts at an angle of 17 degrees below the horizontal. Find the work done by each of the forc; A 1.5-kg cart is pulled with a force of 7.3 N at an angle of 40 degrees above the horizontal.

A thick cable, 60 ft long and weighing 180 lb, hangs from a winch on a crane. Compute in two different ways the work done if the winch winds up 25 ft of the cable. Write a function for the weight of the remaining cable after x feet has been wound up by the winch. Estimate the amount of work done when the winch pulls up Δ \Delta Δ x feet of cable. The work done by the force of gravity, on an object near the surface of Earth, depends only on the weight of the object and the difference in height through which it moved. 25. (a) Calculate the work done on a 1500-kg elevator car by its cable to lift it 40.0 m at constant speed, assuming friction averages 100 N. (b) What is the work done
A man weighing 50 kg lifts a weight of 30 kg to the top of building 10 m high. A man of mass 50 kg climbs up a ladder of height 10 m. Calculate: (i) the work done by the man, and (ii) the increase in his potential energy. Find the work done by the man. Take g = 10 m / s 2. View Solution. Q4. A man carrying a bag of mass 25 kg climbs up
Physics. Physics questions and answers. Question 3 (1 point) Calculate the work done by a force of 21 Newtons that moves a box through a displacement of 17 meters Your Answer: Answer Question 4 (1 point) Calculate the work done to lift a 24 kg box against gravity a height of 12 meters. Hint: since the weight of the box is mg, you need to use

A=3, B=0, and C=5. Starting from rest, the student pulls a (25.0+A) kg box a distance of (4.50 - B) across the floor using a force of (134 + C) N applied at 35.0 degrees above horizontal. The coefficient of kinetic friction between the floor and the box is 0.220. Find the work done by the pulling force.

The force acts for one seconds. (a) Show that the work done by the applied force does not exceed 40 J. (b) Find the work done by the force of gravity in that one second if the work done by the applied force is 40 J. (c) Find the kinetic energy of the block at the instant the force ceases to act. Take g = 10 m / s 2.
Calculate the work done by the porter on the suitcase. A man lifts a luggage of weight 100 N from the ground and puts it on his head 1.7 m above the ground. Calculate work done by him on the luggage. View Solution. Q4. Calculate the work done by q student in lifting a 0.5 kg book from the ground and keeping it on a shelf 1.5 m high. View
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    • find the work done when a 25 kg weight