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Course: Mechanics (Essentials) - Class 11th > Unit 6

Lesson 6: Why do you feel heavier in a lift when it starts moving up?
Science
Mechanics (Essentials) - Class 11th
Could a coin dropped from a tall building kill you?
Why do you feel heavier in a lift when it starts moving up?
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Normal force (basic)

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Problem

Ruchi hits her wooden toy having a mass of 10 kg with a hammer. When she does so, the normal force that is exerted on the ground by the toy is NGT=250 N.
Find the force with which Ruchi hit the toy.
Note: The force applied by Ruchi is directed vertically. Assume g=10 m/s2.
F=
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3/5
  • a simplified improper fraction, like 7/4
  • a mixed number, like 1 3/4
  • an exact decimal, like 0.75
  • a multiple of pi, like 12 pi or 2/3 pi
N