Question

Груз массой 3кг тянут с силой 6Н под углом 90градусов к горизонту. какую работу совершает сила, если тело прошло 5м?На высоте 5м под поверхностью Земли строительный блок имеет потенциальную знеогию 12Дж. Чему равга его масса?

Answer 1

Его масса  m = Eп/gh = 1500 000 Дж / 10 м/с2 * 15 м =10000 кг = 10 т

Answer 2

Calculation of Work Done by the Force

To calculate the work done by a force, we can use the formula:

Work = Force × Distance × cos(θ)

Where: - Force is the magnitude of the force applied (6 N in this case). - Distance is the distance over which the force is applied (5 m in this case). - θ is the angle between the force and the direction of motion (90 degrees in this case).

Plugging in the values, we get:

Work = 6 N × 5 m × cos(90°)

Since the angle between the force and the direction of motion is 90 degrees, the cosine of 90 degrees is 0. Therefore, the work done by the force is:

Work = 6 N × 5 m × 0 = 0 J

So, the work done by the force is 0 Joules.