50-100

The law of conservation of mechanical energy in a conservative system

• U=const

• T+U=const

• T=const

• T-U=const

The law of conservation of mechanical energy in a conservative system

• T-U=const

• U=const

• T₁+U₁=T₂+U₂

• T=const

The law of conservation of energy is a consequence

• homogeneity of space

• homogeneity of time

• the isotropy of space

• the isotropy of time

The increment of the total energy is determined by work forces

• no conservative

• the resultant

• the resultant external

• is not dissipative

The increment of the total energy is determined by work forces

• conservative

• dissipative

• is not dissipative

• the resultant internal

The body weight of 0.8 kg thrown vertically upwards. The kinetic energy of the body at the time cast is equal to 200 joules. The body can rise to the height (g = 10 m/S2)

• 50m

• 25m

• 10m

• 12.5m

The angular momentum of a system remains constant in time if:

• the sum of the external forces is constant

• the sum of the moments of the external forces is zero

• the sum of the internal forces is zero

• the sum of the moments of the external forces is constant

The law of conservation of angular momentum is a consequence of

• the isotropy of space

• homogeneity of time

• the isotropy of time

• all answers are not correct

The time derivative of angular momentum of a closed system is equal

• 
• 
• 0

• 

Translational motion

• movement, in which any direct, rigidly connected with the moving body remains parallel to its initial position

• a periodic change in the amplitude of the oscillations induced by the addition of two harmonic oscillations with close frequencies

• a movement in which the body position is repeated periodically

• all points of the body move in circles whose centers lie on the same straight line