Home
Class 11
PHYSICS
A small steel ball falls through a syrup...

A small steel ball falls through a syrup at a constant speed of `10cms^-1`. If the steel ball is pulled upwards with a force equal to twice its effective weight, how fast will it move upwards?

A

`10 cm//s`

B

`20 cm//s`

C

`5 cm//s`

D

`-5 cm//s`

Text Solution

Verified by Experts

The correct Answer is:
A
Magnitude of viscous force is equal to weight and in later case it will act downward.
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Exercise- 2 PART - II|8 Videos

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Exercise- 2 PART - III|11 Videos

  • ELASTICITY AND VISCOCITY

    RESONANCE|Exercise Exercise- 1 PART - II|14 Videos

  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 92 illustration|2 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE|Exercise Exercise|43 Videos

Similar Questions

Explore conceptually related problems

A small steel ball bounces on a steel plate held horizontally. On each bounce the speed of the ball arriving at the plate is reduced by a factor e (coefficient of restitution) in the rebound, so that v_("upward")=eV_("downward.") If the ball is initially dropped from a height of 0.4 m above the plate and if 10 seconds later the bouncing ceases, the value of e is

A baseball of mass m is thrown upward with some initial speed. If air resistance is neglected, what is the force on the ball: (a) when it reaches half its maximum height, and (b) when it reaches its peak?

A player throws a ball upwards with an initial speed of 29.4 ms^(-1). What are the velcity and acceleration of the hall at the highest point os its motion ?

A ball is throw vertically upward. It has a speed of 10 m//s when it has reached on half of its maximum height. How high does the ball rise ? (Taking g = 10 m//s^2 ).

A ball falls from a height such that it strikes the floor of lift at 10 m/s. If lift is moving in the upward direction with a velocity 1 m/s, then velocity with which the ball rebounds after elastic collision will be

A 3-kg steel ball strikes a wall with a speed of 10.0ms^(-1) at an angle of 60.0^(@) with the surfaces of the wall. The ball bounces off with the same speed and same angle. If the ball was in contact with the wall for 0.2s, find the average force exerted by the wall on the ball.

A boy standing on a stationary lift ( open from above ) thrown a ball upwards with the maximum initial speed he can, equal to 49 ms^(-1) . How much time does the ball take to return to his hands ? If the lift starts moving up with a uniform speed of 5 ms^(-1) and the boy again throws the ball up with the maximum speed he can , how hoes the ball take to return to his hands ?