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One or more external forces are exerted on each object enclosed in a dashed box

ID: 2257885 • Letter: O

Question

One or more external forces are exerted on each object enclosed in a dashed box shown in the figure below. Identify the reaction to each of these forces. (Assume that (a), (b) and (c) occur on Earth while (c), (d) and (e) occur far from any outside gravitational influences. Select all that apply.)

(a) the spring exerts a force (b) the wagon exerts a force downward on the Earthto the right on the wallto the right on the handupward on the Earthto the left on the wallto the left on the hand
downward on the Earth due to gravitational attractionupward on the Earth due to gravitational attractionupward to the left on the handleupward on the Earth due to contactdownward to the left on the handledownward on the Earth due to contact One or more external forces are exerted on each object enclosed in a dashed box shown in the figure below. Identify the reaction to each of these forces. (Assume that (a), (b) and (c) occur on Earth while (c), (d) and (e) occur far from any outside gravitational influences. Select all that apply.)

Explanation / Answer


from nwetons third law there is reaction for every action which is equal in magnitude but opposite in direction.

a) when the spring is pulled towards right then the spring exerts a force on the person towards left with a force proportional to the extension of the spring.

b)as the person pulls the trolley towards right and up, the trolley tries to pulls back the person backwards and down.

c)when the person kicks the ball the exerts some force on the man. then ball then travels in a parabolic path.

d)between two particles there exists a gravitational force of attraction which pulls the smaller ball towards the big ball.

e)with opposite charges there exists an electrostatic force of attraction if the negative charge is lower in mass it moves towards the bigger positive ball.

f)manetic surfaces pulls the metals towards it.