MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Instantaneous Force and Impulse

A load of 5...

Question

A load of $50 k g$ is to be lifted to a height of $15 m$ in $15 s$ . The power retirement is

A

540 W

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

450 W

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

500 W

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

Z e r o

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $500 W$
Work done $= m g h$
Power $= \frac{W o r k}{t i m e} = \frac{m g h}{t} = \frac{50 \times 10 \times 15}{15} = 500 W$

Suggest Corrections

thumbs-up

0

Similar questions

Q. A weight lifter lifted a load of

200 k g f

2.5 m

5 s

g = 10 N

k g^{- 1}

. Calculate the power developed by him.

A weightlifter lifted a load of 200 kgf to a height of 2.5m in 5s .Calculate :

1-the work done

2-the power developed by him

Take g=10N 1/kg

Q. A boy has to lift a load of mass

50 k g

1 m .

What effort is required if he lifts it directly ? Take

g = 10 N k g^{- 1}

.

A pump can lift water of 150 kg in 15 s, to store it in an overhead tank at a height of 15 m. Find the power of the pump. $(g = 9.8 m s^{- 2})$

Sneha has to lift a load of mass 50 kg to a height 1m. She can exert a maximum effort of 250 N, so she uses an inclined plane to lift the load up. What should be the minimum length of the plank used by her?

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Summary and Misconceptions

PHYSICS

Watch in App

explore_more_icon

Explore more

Instantaneous Force and Impulse

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon