Answer:
Mass= 520.83 kg
Explanation:
Newton's second law states
Force = mass *acceleration
The force applied must be equal to the weight of the object to lift it ignoring frictional forces and resistances.
therefore weight= force
so W= mg where g is the acceleration due to gravity
therefore 1.25*103 N= m * 7.86 ft /sec square
But SI unit of g is m/sec square
1 ft = 0.3048 m
therefore multiplying 7.86 ft with 0.3048 m= 2.395= 2.4 m to get the value in meters.
W= mg
m = W/g=1.25*10³ /2.4= 1250/2.4= 520.833 kg
