A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of 60 ° by a force of 10 N…

A block of mass 1 kg is pushed up a surface inclined to horizontal at an angle of 60° by a force of 10 N parallel to the inclined surface as shown in figure. When the block is pushed up by 10 m along inclined surface, the work done against frictional force is : g=10 m s-2

  1. 53 J
  2. 5 J
  3. 5×103 J
  4. 10 J

Solution

Work done against frictional force  

=μN×10=μmgcos60°×10

=0.1×5×10=5 J

Asked in: JEE Main 2024 (30 Jan Shift 2)

Practice more Work Power Energy questions on Aicharya