(a) A concrete block of mass 2 kg is placed on a rough road surface and...

 

Transcribed Image Text:

(a) A concrete block of mass 2 kg is placed on a rough road surface and is pulled by a string as shown in Figure Q2a. (i) (ii) 2 kg Figure Q2a The block starts to move at constant speed when F is increased to 2 N. What is the friction between the block and the surface? (3 marks) Find the acceleration of the block when F is increased to 4 N. (5 marks) (iii) The string is broken when the block is moving. Find the subsequent acceleration of the block. (5 marks) (a) A concrete block of mass 2 kg is placed on a rough road surface and is pulled by a string as shown in Figure Q2a. (i) (ii) 2 kg Figure Q2a The block starts to move at constant speed when F is increased to 2 N. What is the friction between the block and the surface? (3 marks) Find the acceleration of the block when F is increased to 4 N. (5 marks) (iii) The string is broken when the block is moving. Find the subsequent acceleration of the block. (5 marks)

Answer rating: 100% (QA)

To solve this problem we can use Newtons second law of motion 1 Friction when F is 2 N i When the bl... View the full answer