A lower block is being pulled to the right across a wooden table and it is 5kg and the block on top of it weighs 2 Kg. The friction between the table and the lower block is reduces the total acceleration to be 1.5 m/s2. Friction keeps the upper block attached to the lower one. What is the force of friction acting on the upper block?
To find the force of friction acting on the upper block, we first need to calculate the total force acting on the lower block.
The total force on the lower block can be determined using Newton's second law of motion, which states that force (F) is equal to mass (m) multiplied by acceleration (a):
F = m * a
Given that the mass of the lower block is 5kg and the acceleration is 1.5 m/s², we can calculate the total force on the lower block:
F = 5 kg * 1.5 m/s²
F = 7.5 N
Since the upper block is attached to the lower block and they move together, the force acting on the upper block is equal to the force acting on the lower block. Therefore, the force of friction acting on the upper block is also 7.5 N.