SATHEE: Laws Of Motion Question 304

Laws Of Motion Question 304

Question: A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration $1.0 m / s^{2}$ . If $g = 10 m s^{- 2}$ , the tension in the supporting cable is

Options:

A) 8600 N

B) 9680 N

C) 11000 N

D) 1200 N

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Answer:

Correct Answer: C

Solution:

[c] Total mass $= (60 + 940) k g = 1000 k g$

Let T be the tension in the supporting cable,

Then $T - 1000 g = 1000 \times 1$

$\Rightarrow T = 1000 \times 11 = 11000 N$

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Laws Of Motion Question 304

Question: A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration1.0m/s2 . If g=10ms−2 , the tension in the supporting cable is

Options:

Answer:

Solution:

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Question: A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel. The lift starts moving upwards with an acceleration $1.0 m / s^{2}$ . If $g = 10 m s^{- 2}$ , the tension in the supporting cable is