A picture has a weight of 50 N and is suspended by a single vertical string. What is the name of the reaction force to the weight of the picture?
1 point
1
Question 2
2.
A man of mass 50 kg stands on a weighing scale in a lift. When the lift is ascending at 0.5 m/s, what is the weight of hte scale?
1 point
1
Question 3
3.
A car travelling on a horizontal road at constant speed of 10 m/s requires a forward force of 100 N. Ignoring the effect of air resistance, what is the force needed to travel at a constant speed of 15 m/s?
1 point
1
Question 4
4.
Newton 1st Law is applied to cases where are are no changes in the state of motion.
1 point
1
Question 5
5.
A bicycle is being peddaled and moving forward. What are the direction of the friction acting on the front and rear wheels?
1 point
1
Question 6
6.
The diagram shows a smooth pulley with two masses W kg and V kg hanging on each side. Given that W is greater than V. Express the acceleration of the system in terms of W, V and g where g is the gravitation acceleration