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

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.)

to the right on the wall

to the left on the hand

to the right on the hand

to the left on the walldownward on the Earthupward on the Earth

upward on the Earth due to gravitational attraction

downward on the Earth due to contact

upward to the left on the handle

upward on the Earth due to contact

downward on the Earth due to gravitational attraction

downward to the left on the handle

upward to the right on the player

downward to the left on the player

upward on the Earthdownward to the right on the player

downward on the Earth

downward on M

to the right on M

upward on M

to the left on M

upward on Q

to the right on Q

downward on Q

to the left on Q

upward on the magnet

to the right on the magnet

to the left on the magnet

downward on the magnet

(a) the spring exerts a force (b) the wagon exerts a force

to the right on the wall

to the left on the hand

to the right on the hand

to the left on the walldownward on the Earthupward on the Earth

upward on the Earth due to gravitational attraction

downward on the Earth due to contact

upward to the left on the handle

upward on the Earth due to contact

downward on the Earth due to gravitational attraction

downward to the left on the handle

(c) the ball exerts a force (d) m exerts a force

upward to the right on the player

downward to the left on the player

upward on the Earthdownward to the right on the player

downward on the Earth

downward on M

to the right on M

upward on M

to the left on M

(e) ?q exerts a force (f) the iron exerts a force

upward on Q

to the right on Q

downward on Q

to the left on Q

upward on the magnet

to the right on the magnet

to the left on the magnet

downward on the magnet

Explanation / Answer

a) Left on hand & right on wall
b) down & left on handle, upward on earth due to gravitational attraction,[(b) is definitely -not- downwards on the earth]
c) down and right on player, upward on earth
d) [dont know what it means by field force] probably left on M
e) to the left on Q
f) to the left on the magnet

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