Concepts Of Physics MCQ Edition [Volume 1]PhysicsWork and Energy

A block of mass 5.0 kg slides down an incline having an inclination of 30^ and a length of 10 m . Determine the work done by the force of gravity.

Options

A490 J
B245 J
C-245 J
D250 J

Correct answer

B. 245 J

Step-by-step solution

Mass of the block, m = 5.0 kg Length of the incline, s = 10 m Angle of inclination, = 30^ Vertical height moved by the block, h = s = 10 30^ = 10 1 2 = 5 m Work done by the force of gravity is given by W = mgh Taking g = 9.8 m/s ^2 , W = 5.0 9.8 5 = 245 J

Practice Work and Energy on Quantrex Academy →

More from Work and Energy

A block of mass 2.00 kg travelling at a speed of 10.0 m/s accelerates at 3.00 m/s ^2 for 5.00 s . Determine its final kinetic energy.A box is pushed a distance of 4.0 m across a floor which offers a resistance of 100 N . What is the work done by the resisting force?The combined mass of a cyclist and the bike is 90 kg . Determine the increase in kinetic energy when the speed increases from 6.0 km/h to 12 km/h .A stationary particle of mass 15 g is accelerated by a constant force of 2.50 N over a displacement of 2.50 m . Determine the work done and the average power delivered.A particle travels from a position r ₁ = (2 m ) i + (3 m ) j to a new position r ₂ = (3 m ) i + (2 m ) j while experiencing a force F = (5 N ) i + (5 N ) j . Determine the work don A man travels along a straight horizontal road carrying a block of mass 2 kg in his hand. If he covers a distance of 40 m with an acceleration of 0.5 m/s ^2 , determine the work do A particle is acted upon by a force F = a + bx in the x -direction, where a and b are constants. Determine the work done by this force during a displacement from x = 0 to x = d .A block of mass 250 g slides down an incline of inclination 37^ at a uniform speed. Determine the work done against friction as the block covers a distance of 1.0 m . Full Work and Energy list All Concepts Of Physics MCQ Edition [Volume 1] PYQs