An athlete with a mass of 70 kg is performing a barbell back squat exercise with...

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An athlete with a mass of 70 kg is performing a barbell backsquat exercise with a load of 150 kg. From the starting position(position A), the athlete stands still prior to lowering their COMin the negative vertical direction at a rate of -1.45m/s² (position B). Once they reach the bottom position,they hold the squat for 3 seconds (e.g. 0 m/s² â€“position C). After the 3 second period, the athlete raises theirCOM in the positive vertical direction at a rate of 2.55m/s² (position D) back to the starting position. Solvefor the net force at each position to allow the athlete to achievethe respective accelerations during the barbell back squatlift.
Starting Position (position A):______________
Lowering COM (position B): _
Holding at bottom for 3 seconds (position C):
Raising the COM to starting position (position D):___

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3.8 Ratings (511 Votes)

The information given Mass of the athlete m 70 kgs Barbel Mass M 150 kg Gravitational acceleration constant 98m s 2 So to stand with this load the athlete requires the following force Formule for force mass X acceleration In the position A the athlete is not moving as a result only gravity is acting on the athlete Therefore Force See Answer

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