Heterogeneous mixture
Element
Compound
B) reduces the amount of input work
C) changes the direction of the input force
D) increases the input distance
C) changes the direction of the input force
Explanation:
A weight machine measure the normal reaction of a body place on the machine.This means the force will have no acceleration. The body placed on the machine will thus exert the force due to gravity and the normal reaction will act in the opposite direction to it.
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B- the sun
C- stars
D- meteoroids