ok im doing my physics homework and we have to submit the answers online.
i keep getting these questions wrong and i only have one more try can someone please tell me how to work it?
a 2.5 kg otter starts from rest at the top of a muddy incline 94.6 cm long and slides down to the bottom in 0.50s.
What net external force acts on the otter along the incline? in units of N.
a 3.37 kg book is dropped from a height of 2.0m. The acceleration of gravity is 9.81 m/s^2.
what is its acceleration? in units of m/s^2
what is its weight? in units of N
a 2.70 kg block is in equilibrium on an incline of 23.3°
the acceleration of gravity is 9.81 m/s^2/
what is Fn of the incline on the block?
in units of N
A block with a mass of 5.8 kg is held in equilibrium on a frictionless incline of 27.0° by the horizontal force F
the acceleration of gravity is 9.81 m/s^2
what is the magnitude of F? in units of N
what is the magnitude of the normal force. in units of N
i have made diagrams of them to help me out. i was gonna post them here but its not allowed. maybe im doing the diagrams wrong>
I would like to see your work.
ok, but how do i put it here if
when i try to post it it says:
You are not allowed to post internet addresses
dont post any hot links. If you have it posted on a web site, do this:
H t t p : w w w. s p a c e s
Sure, I can help you with these physics questions. Let's go through each question one by one and explain how to approach them:
Question 1: What net external force acts on the otter along the incline?
To find the net external force acting on the otter along the incline, you can use Newton's second law of motion. The formula is F(net) = m * a, where F(net) is the net force, m is the mass, and a is the acceleration along the incline.
In this case, the otter starts from rest, so its initial velocity is zero. You can use the equation vf = vi + at, where vf is the final velocity (which is unknown), vi is the initial velocity (zero), a is the acceleration (unknown), and t is the time (0.50s). Solve this equation for acceleration.
Once you have the acceleration, you can substitute it back into Newton's second law to find the net force acting on the otter.
Question 2: What is the acceleration of the book?
To find the acceleration of the book, you can use the formula for the acceleration of a freely falling object near the surface of the Earth, which is given by g (the acceleration due to gravity). In this case, g is 9.81 m/s^2.
Question 3: What is the weight of the book?
The weight of an object is the force due to gravity acting on it. It can be calculated using the formula weight = mass * g, where mass is the mass of the object and g is the acceleration due to gravity.
Question 4: What is Fn of the incline on the block?
To find Fn (the normal force of the incline on the block), you can use the fact that the object is in equilibrium, which means the sum of forces acting on it is zero. In this case, the normal force and the force due to gravity are the only vertical forces present. You can find the magnitude of Fn by calculating the component of the gravitational force perpendicular to the incline.
Question 5: What is the magnitude of F?
To find the magnitude of F, you can again use the fact that the object is in equilibrium. In this case, the horizontal force F and the component of the gravitational force parallel to the incline are the only forces acting on the block. Use the same approach as in Question 4 to find the magnitude of F.
Remember to carefully review the formulas needed for each question and write out the known values for the variables. Double-check your calculations, as mistakes can sometimes lead to incorrect answers.
Regarding the diagrams, it is helpful to make accurate diagrams that represent the physical situation described in the problem. Make sure to label all the forces and angles involved.
If you have any specific calculations or diagrams you want to discuss, feel free to describe them, and I will do my best to assist you.