¿Cuál es la fuerza (FM ), aproximada que debe ejercer el bíceps cuando una pelota de 5 kg se sostiene en la mano, con el brazo horizontal?. El bíceps se conecta con el antebrazo mediante un tendón unido a 5 cm de la articulación del codo. Supón que la masa del antebrazo y la mano juntas es de 2 kg y que su centro de gravedad (CG)

In order for the bug to fly through the air a force has to push the bug forward. identify this force. how does the bug produce

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?

It's a snowy day and you're pulling a friend along a level road on a sled. you've both been taking physics, so she asks what you think the coefficient of friction between the sled and the snow is. you've been walking at a steady 1.5m/s, and the rope pulls up on the sled at a 32 ∘ angle. you estimate that the mass of the sled, with your friend on it, is 65 kg and that you're pulling with a force of 80 n .