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Dummy assignment

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Answered 7 days After Feb 10, 2021

Solution

Talvinder answered on Feb 17 2021

127 Votes

Question 1 Sol: - mass = 40kg, earth gravity g = 9.8 m/s2
Normal force = mg = 40 x 9.8 = 392N
Option A

Question 2 Sol: - mass = 800kg
Elevator is at rest So,
F= mg= 800 x 9.8 = 7840 N
Option C

Question 3 Sol: - mass = 800kg
Elevator accelerates upward with a = 2m/s2
F= m (g +a)
= 800 (9.8 + 2)
= 9440 N
Option D

Question 4 Sol: - mass = 800kg
Elevator accelerates upward with a = 2m/s2
F= m (g - a)
...

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