# Write an expression for the net work done on the block

Let system X consist of block A, block B, and the spring. If it is not consistent, resolve the inconsistency. How much work is done by an applied force to lift a Newton block 3. During the interval from t1 to t2, block A is pushed through a distance dA by a hand exerting a force of magnitude FA, as shown.

A tired squirrel mass of 1 kg does push-ups by applying a force to elevate its center-of-mass by 5 cm. In this problem, the d is horizontal and the F is at a degree angle to the horizontal.

Write an expression for the net external work done on system ABS by external forces in terms of given quantities ie. Let system AS consist of block A and the spring. Estimate the number of push-ups that a tired squirrel must do in order to do a approximately 5.

Consider the interval from t3 to t4: Thus, theta is 60 degrees. Block B is held in place by a wall. What is the displacement of the left end of the spring during this interval?

Which of these displacements should be used to calculate the work done on the spring by the wall? Is the net external work done on system AS by external forces over this interval greater than, less than, or equal to that on system ABS over the interval from t1 to t2?

What is the displacement of the left end of the spring during this interval? Which of these displacements should be used to calculate the work done on the spring by the wall? Write an expression for the net external work done on system AS over this interval by external forces in terms of the given quantaties i.

The angle between the upward force and the upward displacement is 0 degrees. During the interval from t1, to t2: The spring is initially unstretched. During the interval from t3 to t4, block A is again pushed a distance dA by a hand exerting a constant force FA.

During the interval from t1 to t2, block A is pushed through a distance dA by a hand exerting a force FA, as shown. Is the work done on block A by the hand positive, negative, or zero?

The wall exerts a force on block B that varies with time but is always directed to the left. Assume that his speed is constant.

This is obviously flawed logic though, because the only parts of the system that are experiencing displacement are the parts being directly influenced by the hand, and therefore they must be the only parts of the system with work being performed on them.

The wall exerts a force on block B that varies with time but is always directed to the left. Work and changes in kinetic energy Block B is now removed, so that the right end of the spring is now directly in contact with the wall, as shown. Write an expression for the work done on block A by the hand over this interval in terms of the given quantaties i.

Is your answer for question b. The spring is initially unstretched. See Answer Here is a good example of the importance of understanding the angle between F and d.

You have to interact with it! FA, fA, t3, t4. Show transcribed image text Two identical blocks, A and B, on a frictionless surface are connected by a spring of negligible mass. FA, fA, t1, t2.Consider system ABS, which consists of block A, block B, and the spring.

Write an expression for the net external work done on system ABS by external forces in terms of given quantities (i.e., F A, d A, t 1, and/or t 2). Explain. The net external work on the system is just that due to the hand.

W= F A d A. B%(45). Nov 04,  · Write an expression for the net external work done on system ABS by external forces The diagram shows block B resting against a wall, and block A being moved toward B, compressing the spring and moving displacement d A.

Mastering Physics: Ch 06 - Download as PDF File .pdf), Text File .txt) or read online. This will yield an expression for the net work W done on the particle by the external forces during the particle's motion in terms of mass and the initial and final velocities.

Part A Find the work W1 done on the block by the force of magnitude F1 /5(16). Apr 02,  · Write an expression for the net work done on the block from the bottom to the top of the ramp.

Express your answer in terms of one or more of the following quantities: the weight mg of the block, the angle, the height H of the ultimedescente.com: Resolved. Write an expression for the net external work done on the system ABS by external forces in terms of given quantities (i.e.

FA, fA, t1, t2).

Explain. b] Block B is now removed, so that the right end of the spring is now directly in contact with the wall, as shown. Work is done on the car (usually by a chain) to achieve this initial height. A coaster designer is considering three different incline angles at which to drag the .

Write an expression for the net work done on the block
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