Answer: 146 kg
Explanation: We need to start with finding the force because the given force is not including the friction caused by the angle. So first, we need to find the adjusted force after taking into account the friction.
Step 1: So, since it is being pulled to the right, we know this since it is positive, we need to find the angle and we use the sinФ function like this:
(Force)(sin(angle)) = (250N) (sin(35)) = 204.78N
Step 2: Now you are ready to find the mass. The formula is:
mass = force/acceleration
Mass = 204.78/1.4 = 146.42
Step 3: Round the answer to the nearest whole number.
Mass = 146