FORCES AND SHAPE
3 marks · EasyAn object is acted on by the following forces along a straight line: 5 N to the right, 2 N to the left, and 1 N to the right.
Calculate the total force acting to the right.
Calculate the resultant force on the object.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
(a) 6 N
(b) 4 N
Show mark scheme and worked solution
Marking points
B1 (a) · 1 mark · 1 mark for adding the forces in the right direction (5 N + 1 N = 6 N)
M1 (b) · 1 mark · method: subtract total left from total right
A1 (b) · 1 mark · accuracy: 6 N (right) - 2 N (left) = 4 N (right) (follow-through)
Worked solution
a) The total force acting to the right is 5 N + 1 N = 6 N. b) Resultant force = 6 N (right) - 2 N (left) = 4 N (to the right).