Again two forces are applied to the cart with two different spring scales as sho
ID: 1495041 • Letter: A
Question
Again two forces are applied to the cart with two different spring scales as shown below. The spring scale F_1 still reads 10.5N. The cart moves with a constant velocity towards the right. What does spring scale F_2 read? Show your calculation and explain. Again two forces are applied to the cart with two different spring scales as shown below. The spring scale F_1 still reads 10.5N. The cart moves toward the left with an acceleration toward the left of 2.50m/s^2. What does spring scale F_2 read? Show your calculations and explain. Which of Newton's laws describes motion with zero combined force?Explanation / Answer
Spring scale can only pull , no push offered by it.
14. F1 = 10.5 N towards lleft
Moves with constant velocity , implies net force will be zero on the block .
Hence reading of second scale = 10.5 N. Towards left.
15. F1 = 10.5 N. Towards right
Acceleration of cart = 2.50 m/s2
F2 - F1_ = ma
Or. F2 = (2.5m +10.5 ) N
16. Third law of newton .