A string pulls horizontally on a cart so that it moves at increasing speed in po

Question

A string pulls horizontally on a cart so that it moves at increasing speed in positive x-direction along a smooth, frictionless, horizontal surface. At moment of time t_1, when the cart is moving medium-fast, the pulling is stopped abruptly. Use a vertical y-axis with the positive direction pointing up. Draw a force diagram for the cart after the pulling stops. Draw the vectors starting at the black dot. The location and orientation of the vectors will be graded. The length of the vectors will not be graded.

Explanation / Answer

After the pulling stops, force = 0

so x will increase with time and y will remain 0

=> Only x-axis will be there.

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