A block is moving on a rough circular track. After the completion of one revolution:

A block is moving on a rough circular track. After the completion of one revolution:
A. Kinetic energy of the block must be greater than the initial kinetic energy.
B. Work done by kinetic friction is negative on ground .
C. Work done by kinetic friction is negative on the block
D. Work done by friction on block is zero

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

Salim Ahmed Kawsar

Correct Answer - C
`W_(f) = -ve`, so it `darr K.E.`

4 views Answered 2023-02-05 15:29

Related Questions

Express of `CO_(2)` is passed through 50 mL of 0.5 M calcium hydroxide solution. After the completion of the reaction, the solution was evaporated to

2 Answers 5 Views

A horizontal surface is partly smooth and partly rough. A particle is projected along the smooth part with speed u. After travelong a distance d, to r

2 Answers 7 Views

A pendulum is suspended from the roof of a rall road car. When the car is moving on a circular track the pandulum inclines:

2 Answers 4 Views

A block of mass 0.1 is held against a wall applying a horizontal force of 5N on block. If the coefficient of friction between the block and the wall i

2 Answers 6 Views

An object of mass m is moving in unifrom circular motion in xy-plane. The circle has radius R and object is moving clockwise around the circle with sp

2 Answers 15 Views

A simple pendulum of length l and having a bob of mass M is suspended ina car. The car is moving on a circular track of radius R with a uniform speed

2 Answers 5 Views

If a first order reaction takes 32 minutes for 75% completion, then time required for `50%` completion is :

2 Answers 4 Views

Agriculture Revolution and Industrial Revolution.

2 Answers 5 Views

An athelete completes one round of a circular track of radius `R` in 40 seconds. What will be the displacement at the end of ` 2 min. 20 second ?

2 Answers 9 Views

A smooth block is released at rest on a `45^(@)` inclined and then slides a distance d. the time taken to slide is n times as much to slide on rough i

2 Answers 5 Views

এক্সাম দিয়ে মেধা যাচাই করুন

Job Preparation (1125)

Admission (754)

এসএসসি (10)

এইচএসসি (5)