The figure shows a 100-kg block being released from rest from a height of 1.0 m. it then takes it 0.90 s to reach the floor. what is the mass m of the other block? the pulley has no appreciable mass or friction.

The mass of the another block is 60 kg.

Explanation:

Given that,

Mass of block M= 100 kg

Height = 1.0 m

Time = 0.90 s

Let the mass of the other block is m.

We need to calculate the acceleration of each block

Using equation of motion

Put the value into the formula

We need to calculate the mass of the other block

Using newton's second law

The net force of the block M

....(I)

The net force of the block m

Put the value of T from equation (I)

Put the value into the formula

Hence, The mass of the another block is 60 kg.

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explanation:

when a device is used in a circuit in which the voltage is 81 v, the current flowing through the device is 3 a. what is the resistance of the device?

a. 27 ω

b. 40.5 a

c. 243 ω

d. 243 a

the correct answer is a. 27