Two forces act on the body: force F1 = 40 N directed vertically upward and F2 = 50 N directed

1. Two forces act on the body: force F1 = 40 N directed vertically upward and F2 = 50 N directed vertically downward. Determine where the body will move? A) up B) down C) will remain at rest 2. What is the weight of a body weighing 700 g? A) 7,000 N B) 700 N C) 7 N 3. The friction force acting on the body is 3 N. Determine the coefficient of friction if the body weight is 15 kg. A) 5 B) 0.2 C) 0.02 4. Where is the elastic force directed when the spring is compressed to the left of the equilibrium position? A) to the left B) to the right C) there is no correct answer 5. The body evenly slides to the right under the action of a force of 10 N. What is the sliding friction force? 6. Determine the weight of the 10 cc steel plate. m. Density of steel 7800kg / cubic m. 7. Force 12 N compresses the spring by 2.5 cm. What is the stiffness of the spring?

answer to 1 – b is the force that pulls down harder.
the answer to 2 – 10 Newton is 1 kg.
the answer to 3 is 15kg / 3H = 0.02.
answer to 4 – b in the opposite direction – to the right
the answer to 5 – 10N is equal to the friction force
the answer to 6 is 7800 * 100 = 780000N
response to 7 – 480N / m