A block on a friction-free horizontal track is acted on simultaneously by three…
PHYSICS · Multi-part · A Level · Physics · Mechanics and materials · Mechanics and materials
Problem
A block on a friction-free horizontal track is acted on simultaneously by three horizontal forces:
• 25 N directed to the right
• 40 N directed to the left
• 10 N directed to the right
(a) Taking rightward as the positive direction, determine the net force acting on the block. Report both the signed value and the magnitude with its direction.
(b) The block has a mass of 5.0 kg. Calculate the magnitude and direction of the block’s acceleration produced by the net force you found in part (a).
(c) Explain how the algebraic sign of the net force you computed in part (a) is reflected in the acceleration obtained in part (b).